Image detection device

Abstract

The utility model relates to the technical field of machine vision detection, and discloses an image detection device, which comprises a first camera, a first magnification lens, a second camera, a second magnification lens, a corner coaxial light source and a light splitting assembly, the first magnification lens is mounted on the first camera, and the first magnification lens faces the light splitting assembly; the second magnification lens is mounted on the second camera and faces the light splitting assembly; the corner coaxial light source is used for illuminating a workpiece and reflecting a reflected light beam of the workpiece to the light splitting assembly; the light splitting assembly is used for emitting the reflected light beam to the first magnification lens and / or the second magnification lens. The image detection device provided by the utility model is wider in application range.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection technology, and in particular to an image inspection device. Background Technology

[0002] Visual inspection uses machines to replace human eyes for measurement and judgment, and can be used to detect whether a workpiece is qualified.

[0003] Existing visual inspection devices generally use cameras and lenses to take pictures of workpieces and then judge whether the workpieces are qualified based on the captured images. However, this inspection method can only output a workpiece image with a magnification of one level to the camera, which cannot simultaneously meet the needs of large-scale global inspection and high-precision local inspection. Its applicable scope is relatively small and it is difficult to meet the multiple needs in actual inspection.

[0004] Therefore, it is necessary to design an image detection device to further improve the applicability of image detection devices.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides an image detection device with a wider range of applications.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An image detection device includes a first camera, a first magnification lens, a second camera, a second magnification lens, a corner coaxial light source, and a beam splitter.

[0009] The first magnification lens is mounted on the first camera and faces the beam splitter; the second magnification lens is mounted on the second camera and faces the beam splitter.

[0010] The corner coaxial light source is used to illuminate the workpiece and reflect the reflected light beam from the workpiece toward the beam splitter; the beam splitter is used to direct the reflected light beam toward the first magnification lens and / or the second magnification lens.

[0011] Optionally, the beam splitting assembly includes a square beam splitting prism, a triangular reflecting prism, a first adjustment device for adjusting the position of the corner coaxial light source, and a second adjustment device for adjusting the position of the triangular reflecting prism;

[0012] When the corner coaxial light source is located at a preset first position and the triangular reflecting prism is located at a preset first reflection position, the reflected light outlet of the corner coaxial light source is directly opposite the square beam splitter. The square beam splitter splits the reflected light beam into a first imaging beam that is directed toward the first magnification lens and a second imaging beam that is directed toward the triangular reflecting prism. The second imaging beam is directed toward the second magnification lens through the triangular reflecting prism.

[0013] Optionally, when the corner coaxial light source is located at a preset second position and the triangular reflecting prism is located at a preset second reflection position, the reflected light outlet of the corner coaxial light source is directly opposite the triangular reflecting prism, and the triangular reflecting prism reflects the reflected light beam to the second magnification lens.

[0014] Optionally, when the corner coaxial light source is located at a preset first position and the triangular reflecting prism is located at a preset third reflection position, the reflected light outlet of the corner coaxial light source faces the square beam splitter, and the mirror surface of the triangular reflecting prism does not face the square beam splitter.

[0015] Optionally, the image detection device also includes a support plate;

[0016] The first camera, the first magnification lens, the second camera, the second magnification lens, the corner coaxial light source, and the beam splitter are all mounted on the same side of the support plate;

[0017] The support plate has a first plate surface close to the first camera, and the rotation drive shafts of the first adjustment device and the second adjustment device are both perpendicular to the first plate surface.

[0018] Optionally, the support plate is further provided with a first clamping seat and a first clamping plate for pressing the first magnification lens onto the first clamping seat;

[0019] The support plate is also provided with a second clamping seat and a second pressing plate for pressing the second magnification lens onto the second clamping seat.

[0020] Optionally, the support plate is provided with a first transverse sliding groove, and the second clamping seat is slidably installed in the first transverse sliding groove;

[0021] The support plate is also provided with a second transverse sliding groove, in which the triangular reflecting prism can be slidably installed, and the triangular reflecting prism is always located directly below the second magnification lens.

[0022] Optionally, the beam-splitting assembly includes a square beam-splitting prism, a triangular reflecting prism, and a light-blocking plate;

[0023] The reflected light outlet of the corner coaxial light source is directly opposite the square beam splitter. The square beam splitter splits the reflected light beam into a first imaging beam that is directed toward the first magnification lens and a second imaging beam that is directed toward the triangular reflecting prism. The second imaging beam is directed toward the second magnification lens through the triangular reflecting prism.

[0024] The light-blocking plate is located between the square beam splitter and the first magnification lens, and the lateral position of the light-blocking plate is adjustable.

[0025] Optionally, the corner coaxial light source is located directly below the square beam splitter, and the center point of the square beam splitter, the center point of the corner coaxial light source, and the center point of the triangular reflecting prism are located on the same vertical plane.

[0026] Optionally, both the first adjustment device and the second adjustment device are servo motors.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The image detection device provided by this utility model uses light reflected from a coaxial light source at a corner to form a reflected beam. After being reflected by the coaxial light source at the corner, the reflected beam is directed towards a beam splitter. The beam splitter can transmit the reflected beam only to a first magnification lens to meet the needs of global detection, or only to a second magnification lens for precise detection, or simultaneously to both the first and second magnification lenses, thereby achieving both global detection and precise detection of a local area of ​​the workpiece. Users can select different detection modes according to the detection needs of the workpiece, significantly increasing the applicability of the image detection device in this utility model.

[0029] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is an exploded view of the image detection device provided in this embodiment of the utility model;

[0032] Figure 2 This is a front view schematic diagram of the image detection device provided in this embodiment of the utility model;

[0033] Figure 3 This is a side view schematic diagram of the image detection device provided in an embodiment of the present invention;

[0034] Figure 4 This is a rear view schematic diagram of the image detection device provided in this embodiment of the present invention;

[0035] Figure 5 This is a top view schematic diagram of an image detection device including a light-blocking plate provided in an embodiment of the present invention;

[0036] Figure 6 This is a side view schematic diagram of another image detection device provided in an embodiment of this utility model;

[0037] Figure 7 This is a schematic diagram of the image detection device provided in this embodiment of the present invention when the corner coaxial light source is located at a preset second position and the triangular reflecting prism is located at a preset second reflection position.

[0038] Reference numerals: 1. First camera; 2. First magnification lens; 3. Second camera; 4. Second magnification lens; 5. Corner coaxial light source; 6. Beam splitter assembly; 6. Beam splitter assembly; 61. Square beam splitter prism; 62. Triangular reflecting prism; 7. Support plate; 71. First transverse slide; 72. Second transverse slide; 701. First plate surface; 81. First clamping seat; 82. First pressing plate; 83. Second clamping seat; 84. Second pressing plate; 9. Light blocking plate. Detailed Implementation

[0039] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0040] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0041] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0043] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0044] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0045] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0046] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0048] In view of the deficiencies of existing image detection devices, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a device that can overcome the deficiencies of the existing technology and make the image detection device more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0049] Please refer to Figures 1 to 4 This utility model provides an image detection device, including a first camera 1, a first magnification lens 2, a second camera 3, a second magnification lens 4, a corner coaxial light source 5, and a beam splitting component 6.

[0050] The first magnification lens 2 is mounted on the first camera 1 and faces the beam splitter 6. The first magnification lens 2 is used to introduce light into the first camera 1 so that the first camera 1 forms a workpiece image with a first magnification. The second magnification lens 4 is mounted on the second camera 3 and faces the beam splitter 6. The second magnification lens 4 is used to introduce light into the second camera 3 so that the second camera 3 forms a workpiece image with a second magnification.

[0051] The corner coaxial light source 5 is used to illuminate the workpiece and reflect the reflected light beam from the workpiece towards the beam splitter 6; the beam splitter 6 is used to direct the reflected light beam towards the first magnification lens 2 and / or the second magnification lens 4. The reflected light beam from the workpiece refers to the light beam reflected from the workpiece.

[0052] In this embodiment, the corner coaxial light source 5 emits light towards the workpiece to illuminate it, and the workpiece reflects the light from the corner coaxial light source 5 to form a reflected beam. After being reflected by the corner coaxial light source 5, the reflected beam is directed towards the beam splitter 6. The beam splitter 6 can either transmit the reflected beam only to the first magnification lens 2 to meet the needs of global detection, or only to the second magnification lens 4 to meet the needs of precise detection; or, the beam splitter 6 can transmit the reflected beam to both the first magnification lens 2 and the second magnification lens 4 simultaneously, so that the first camera 1 forms a first magnification image of the workpiece, and the second camera 3 forms a second magnification image of the workpiece, thus simultaneously achieving both global and precise detection of the workpiece. Users can select different detection modes according to the detection needs of the workpiece. The applicability of the image detection device in this invention is significantly increased.

[0053] The image detection device in this embodiment does not require placing the workpiece under two different camera modules for detection. It can detect the entire surface of the workpiece simultaneously in one detection and can also detect the surface features of the workpiece with high precision, effectively improving detection efficiency and applicability.

[0054] Optionally, the beam-splitting assembly 6 includes a square beam-splitting prism 61, a triangular reflecting prism 62, a first adjustment device for adjusting the position of the corner coaxial light source 5, and a second adjustment device for adjusting the position of the triangular reflecting prism 62; such as Figure 2 As shown, when the corner coaxial light source 5 is located at a preset first position and the triangular reflecting prism 62 is located at a preset first reflection position, the reflected light outlet of the corner coaxial light source 5 faces the square beam splitter 61. The square beam splitter 61 splits the reflected light beam into a first imaging beam that is directed towards the first magnification lens 2 and a second imaging beam that is directed towards the triangular reflecting prism 62. The second imaging beam is directed towards the second magnification lens 4 via the triangular reflecting prism 62. The first imaging beam passes through the first magnification lens 2 and enters the first camera 1 to form a first magnification image of the workpiece. The second imaging beam passes through the second magnification lens 4 and enters the second camera 3 to form a second magnification image of the workpiece. Figure 1 Neither the first adjustment device nor the second adjustment device is shown in the figure.

[0055] Optionally, such as Figure 7When the corner coaxial light source 5 is located at a preset second position and the triangular reflecting prism 62 is located at a preset second reflection position, the reflected light outlet of the corner coaxial light source 5 faces the triangular reflecting prism 62, and the triangular reflecting prism 62 reflects the reflected light beam to the second magnification lens 4. At this time, the corner coaxial light source 5 directly reflects the workpiece image to the triangular reflecting prism 62, and the triangular reflecting prism 62 reflects the workpiece image into the second camera 3. In this embodiment, the corner coaxial light source 5 can rotate around a first rotation axis perpendicular to the first plate surface 701, and the triangular reflecting prism 62 can rotate around a second rotation axis perpendicular to the first plate surface 701, so that the workpiece image does not need to pass through the square beam splitter prism 61 and is directly projected onto the second camera 3, which is beneficial to improve the light intensity, reduce light loss, and make the formed second magnification workpiece image more likely to highlight workpiece surface defects.

[0056] Optionally, when the corner coaxial light source 5 is located in a preset first position and the triangular reflecting prism 62 is located in a preset third reflection position, the reflected light outlet of the corner coaxial light source 5 faces the square beam splitter 61, and the mirror surface of the triangular reflecting prism 62 does not face the square beam splitter 61. It should be noted that when the triangular reflecting prism 62 is located in the preset third reflection position, the triangular reflecting prism 62 faces away from the square beam splitter 61 and does not reflect the second imaging beam split by the square beam splitter 61; therefore, the second camera 3 will not form an image at this time.

[0057] Optionally, the image detection device further includes a support plate 7; the first camera 1, the first magnification lens 2, the second camera 3, the second magnification lens 4, the corner coaxial light source 5, and the beam splitter 6 are all mounted on the same side of the support plate 7, and the support plate 7 supports all the above-mentioned components; the support plate 7 has a first plate surface 701 near the first camera 1, and the rotation drive shafts of the first adjustment device and the second adjustment device are both perpendicular to the first plate surface 701. It should be further noted that the first adjustment device is used to drive the corner coaxial light source 5 to rotate to a suitable angle. The first adjustment device can be a motor, a rotary cylinder, or other rotary drive device capable of driving the corner coaxial light source 5 to rotate to a specific angle. Similarly, the second adjustment device can be a motor, a rotary cylinder, or other rotary drive device.

[0058] Optionally, the support plate 7 is further provided with a first clamping seat 81 and a first pressing plate 82 for pressing the first magnification lens 2 onto the first clamping seat 81; the support plate 7 is further provided with a second clamping seat 83 and a second pressing plate 84 for pressing the second magnification lens 4 onto the second clamping seat 83.

[0059] In this embodiment, the first clamping seat 81 and the first pressing plate 82 cooperate to clamp the first magnification lens 2, and the second clamping seat 83 and the second pressing plate 84 cooperate to clamp the second magnification lens 4.

[0060] Optionally, the support plate 7 has a first transverse sliding groove 71, in which the second clamping seat 83 is slidably installed; the support plate 7 also has a second transverse sliding groove 72, in which the triangular reflecting prism 62 is slidably installed, and the triangular reflecting prism 62 is always located directly below the second magnification lens 4. The first transverse sliding groove 71 is used to adjust the position of the second magnification lens 4 to avoid conflict with its position; in addition, it can also change the optical path from the second magnification lens 4 to the triangular reflecting prism 62, improving structural flexibility.

[0061] Optionally, the beam splitting assembly 6 includes a square beam splitter 61, a triangular reflecting prism 62, and a light-blocking plate 9; the reflected light outlet of the corner coaxial light source 5 is directly opposite the square beam splitter 61, the square beam splitter 61 splits the reflected beam into a first imaging beam directed toward the first magnification lens 2 and a second imaging beam directed toward the triangular reflecting prism 62, and the second imaging beam is directed toward the second magnification lens 4 via the triangular reflecting prism 62; the light-blocking plate 9 is located between the square beam splitter 61 and the first magnification lens 2, and the lateral position of the light-blocking plate 9 is adjustable.

[0062] In another specific implementation, such as Figure 5 At this point, the light-blocking plate 9 neither blocks the first imaging beam nor the second imaging beam, allowing both the first camera 1 and the second camera 3 to capture images. When the light-blocking plate 9 slides directly above the square beam splitter 61, it blocks the first imaging beam, preventing the first camera 1 from capturing an image, while the second camera 3 captures an image normally. When the light-blocking plate 9 slides directly above the triangular reflecting prism 62, it blocks the second imaging beam, allowing the first camera 1 to capture an image, while the second camera 3 cannot. In this embodiment, the position adjustment of the light-blocking plate 9 is simple and easy to operate, providing greater convenience for the user. Preferably, a lateral telescopic device can be provided to adjust the position of the light-blocking plate 9 laterally.

[0063] Optionally, the corner coaxial light source 5 is located directly below the square beam splitter 61, and the center point of the square beam splitter 61, the center point of the corner coaxial light source 5, and the center point of the triangular reflecting prism 62 are located on the same vertical plane, so as to ensure that when the corner coaxial light source 5 is rotated to the preset second position, it can directly reflect the workpiece image to the triangular reflecting prism 62 through the inner beam splitter. Figure 6 The installation position of the first adjustment device is specifically shown in the drawing. The first adjustment device is located at... Figure 6 The motor is located in the lower left corner.

[0064] Optionally, both the first adjustment device and the second adjustment device are servo motors.

[0065] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An image detection device, characterized in that, It includes a first camera, a first magnification lens, a second camera, a second magnification lens, a corner coaxial light source, and a beam splitter assembly; The first magnification lens is mounted on the first camera and faces the beam splitter; the second magnification lens is mounted on the second camera and faces the beam splitter. The corner coaxial light source is used to illuminate the workpiece and reflect the reflected light beam from the workpiece toward the beam splitter; the beam splitter is used to direct the reflected light beam toward the first magnification lens and / or the second magnification lens.

2. The image detection device according to claim 1, characterized in that, The beam splitting assembly includes a square beam splitting prism, a triangular reflecting prism, a first adjustment device for adjusting the position of the corner coaxial light source, and a second adjustment device for adjusting the position of the triangular reflecting prism. When the corner coaxial light source is located at a preset first position and the triangular reflecting prism is located at a preset first reflection position, the reflected light outlet of the corner coaxial light source is directly opposite the square beam splitter. The square beam splitter splits the reflected light beam into a first imaging beam that is directed toward the first magnification lens and a second imaging beam that is directed toward the triangular reflecting prism. The second imaging beam is directed toward the second magnification lens through the triangular reflecting prism.

3. The image detection device according to claim 2, characterized in that, When the corner coaxial light source is located at a preset second position and the triangular reflecting prism is located at a preset second reflection position, the reflected light outlet of the corner coaxial light source is directly opposite the triangular reflecting prism, and the triangular reflecting prism reflects the reflected light beam to the second magnification lens.

4. The image detection device according to claim 3, characterized in that, When the corner coaxial light source is located at a preset first position and the triangular reflecting prism is located at a preset third reflection position, the reflected light outlet of the corner coaxial light source is directly facing the square beam splitter, and the mirror surface of the triangular reflecting prism does not face the square beam splitter.

5. The image detection device according to claim 2, characterized in that, It also includes a support plate; The first camera, the first magnification lens, the second camera, the second magnification lens, the corner coaxial light source, and the beam splitter are all mounted on the same side of the support plate; The support plate has a first plate surface close to the first camera, and the rotation drive shafts of the first adjustment device and the second adjustment device are both perpendicular to the first plate surface.

6. The image detection device according to claim 5, characterized in that, The support plate is also provided with a first clamping seat and a first pressing plate for pressing the first magnification lens onto the first clamping seat; The support plate is also provided with a second clamping seat and a second pressing plate for pressing the second magnification lens onto the second clamping seat.

7. The image detection device according to claim 6, characterized in that, The support plate is provided with a first transverse sliding groove, and the second clamping seat is slidably installed in the first transverse sliding groove; The support plate is also provided with a second transverse sliding groove, in which the triangular reflecting prism can be slidably installed, and the triangular reflecting prism is always located directly below the second magnification lens.

8. The image detection device according to claim 1, characterized in that, The beam-splitting assembly includes a square beam-splitting prism, a triangular reflecting prism, and a light-blocking plate; The reflected light outlet of the corner coaxial light source is directly opposite the square beam splitter. The square beam splitter splits the reflected light beam into a first imaging beam that is directed toward the first magnification lens and a second imaging beam that is directed toward the triangular reflecting prism. The second imaging beam is directed toward the second magnification lens through the triangular reflecting prism. The light-blocking plate is located between the square beam splitter and the first magnification lens, and the lateral position of the light-blocking plate is adjustable.

9. The image detection apparatus according to claim 2 or 8, characterized in that, The corner coaxial light source is located directly below the square beam splitter, and the center point of the square beam splitter, the center point of the corner coaxial light source, and the center point of the triangular reflective prism are located on the same vertical plane.

10. The image detection device according to claim 5, characterized in that, Both the first adjustment device and the second adjustment device are servo motors.

Images